PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91962Relay,electromagnetic

U S Dept of Transportation Federal Aviation Administration · NSN 5945-00-728-0631 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-728-0631 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-728-0631. Primary manufacturer part number: 91962.
Features
  • Relay,electromagnetic — FSC 5945
  • Coil Quantity: 1
  • Main Contact Load Current Rating at Maximum Rated Voltage: 5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
  • Operating Voltage Rating and Type at Specified Temp: 43.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Features Provided: POLARIZED
  • Thread Class: 2B SINGLE MOUNTING FACILITY
  • Nonpile-Up Main Contact Arrangement: 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Mounting Facility Type and Quantity: 3 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-728-0631, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is U S Dept of Transportation Federal Aviation Administration. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-728-0631
Primary Part Number91962
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerU S Dept of Transportation Federal Aviation Administration
StatusCANCELLED
Coil Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp43.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Features ProvidedPOLARIZED
Thread Class2B SINGLE MOUNTING FACILITY
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Mounting Facility Type and Quantity3 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Winding DC Resistance Rating1.000 KILOHMS NOMINAL SINGLE WINDING
Terminal Type and Quantity12 TAB, SOLDER LUG CONTACTS
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle2.593 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Environmental ProtectionFUNGUS PROOF AND HUMIDITY PROOF
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Terminal Type and Quantity2 TAB, SOLDER LUG ENERGIZING ELEMENT
Winding Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5950-00-225-2570905466-1 INTERCHANGEABLE
Transformer,audio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
4940-01-267-064085004 INTERCHANGEABLE
Auger Machine,pipe and Sewer,pow
The Tomlinson Group, Llc
Cross-Reference Index
Part NumberManufacturer
91962 Sigma Instruments Inc (USA)
91962 PRIMARY U S Dept of Transportation Federal Aviation Administration (USA)
6FY4C91962 Sigma Instruments Inc (USA)
271-1348P1 Raytheon Company Div Corp (USA)
Related Parts
5950-00-225-2570INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
905466-1
4940-01-267-0640INTERCHANGEABLE
AUGER MACHINE,PIPE AND SEWER,POW
85004

Frequently Asked Questions

What is NSN 5945-00-728-0631?

NSN 5945-00-728-0631 is a Relay,electromagnetic, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-728-0631?

NSN 5945-00-728-0631 has 4 cross-referenced part numbers: 91962 (Sigma Instruments Inc), 91962 (U S Dept of Transportation Federal Aviation Administration), 6FY4C91962 (Sigma Instruments Inc), 271-1348P1 (Raytheon Company Div Corp).

What NSN replaces 5945-00-728-0631?

There are 2 known substitutes for 5945-00-728-0631: 5950-00-225-2570, 4940-01-267-0640. Verify interchangeability with system specifications before substitution.

What are the specifications of 91962?

Key specifications for 91962: Coil Quantity: 1; Main Contact Load Current Rating at Maximum Rated Voltage: 5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD; Operating Voltage Rating and Type at Specified Temp: 43.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING; Features Provided: POLARIZED. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-728-0631 still in active supply?

NSN 5945-00-728-0631 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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